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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 11-29-2012, 04:16 PM
jiggidy03 jiggidy03 is offline
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Subtle Wine from Engine

Hey guys, I just picked up a 2008 335xi.

Recently I have noticed a subtle police siren sounding wine coming from the engine which can be faintly heard between about 2000-4000rpm in first and second gear.

Any ideas what this could be?

Thanks in advance.
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  #2  
Old 11-29-2012, 04:17 PM
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galahad05 galahad05 is offline
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Does this only occur while the engine is still cold/cool, or all the time?
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  #3  
Old 11-29-2012, 04:23 PM
jiggidy03 jiggidy03 is offline
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Quote:
Originally Posted by galahad05 View Post
Does this only occur while the engine is still cold/cool, or all the time?
Now that you mention it, I do believe it occurs mainly while the engine is still cold.
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  #4  
Old 11-29-2012, 04:28 PM
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galahad05 galahad05 is offline
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Is your car boosted? That is, tuned?
If you wish, "hypothetically speaking".
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  #5  
Old 11-29-2012, 04:30 PM
jiggidy03 jiggidy03 is offline
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Quote:
Originally Posted by galahad05 View Post
Is your car boosted? That is, tuned?
If you wish, "hypothetically speaking".
Nope. It's all stock.
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  #6  
Old 11-29-2012, 04:32 PM
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How about when the air conditioning button is on? I'd you turn air conditioning off, does the sound go away?

(My 2008 535xi does this but it is very faint)
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  #7  
Old 11-29-2012, 04:32 PM
jiggidy03 jiggidy03 is offline
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Quote:
Originally Posted by cordoor View Post
How about when the air conditioning button is on? I'd you turn air conditioning off, does the sound go away?

(My 2008 535xi does this but it is very faint)
Makes the sound when the air conditioning is off.
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  #8  
Old 11-29-2012, 04:34 PM
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chris328 chris328 is offline
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i used to get the whine on my old 2008 328. Would usually happen between 35-50 mph when coasting. When it happened I would try and pretend it was a ferrari
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  #9  
Old 11-29-2012, 04:37 PM
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galahad05 galahad05 is offline
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Some people say turbo shaft play, but lots of people with a very loud siren sound would end up tearing into the engine bay and find no end-play.
Some people have mentioned accessory fan belt pulleys.
Some people have mentioned power steering pumps.

As far as I know, no one knows for sure...
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  #10  
Old 11-29-2012, 04:39 PM
jiggidy03 jiggidy03 is offline
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Quote:
Originally Posted by galahad05 View Post
Some people say turbo shaft play, but lots of people with a very loud siren sound would end up tearing into the engine bay and find no end-play.
Some people have mentioned accessory fan belt pulleys.
Some people have mentioned power steering pumps.

As far as I know, no one knows for sure...
So would you recommend taking it in before things get worse? Or do you think its a minor issue? I think I'll have a mechanic take a look when I get my winter tires changed.
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  #11  
Old 11-29-2012, 04:40 PM
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galahad05 galahad05 is offline
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Also, one guy mentioned alternator clutch....


Generally, the dealerships haven't been able to find anything wrong when the cars were taken in.
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  #12  
Old 11-29-2012, 04:41 PM
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Personally, I think all wine should be subtle. Brazen and bold tastes should be left in the gas station flavored-vodka aisle, IMO.
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  #13  
Old 11-29-2012, 04:41 PM
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galahad05 galahad05 is offline
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Quote:
Originally Posted by jiggidy03 View Post
So would you recommend taking it in before things get worse? Or do you think its a minor issue? I think I'll have a mechanic take a look when I get my winter tires changed.
Honestly, I'm not sure.
If you can get a mechanic to look it over on the cheap, I guess that would be the prudent thing to do.
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  #14  
Old 11-29-2012, 04:51 PM
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andrew b andrew b is offline
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Quote:
Originally Posted by galahad05 View Post
Is your car boosted? That is, tuned?
If you wish, "hypothetically speaking".
And if you heard this with a car that has a tune? Hypothetically, of course??
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  #15  
Old 11-29-2012, 04:56 PM
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galahad05 galahad05 is offline
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Slightly more likely that it was turbo shaft end play. But even then.....
A tuned N54 is simply going to have more turbo noise than un-tuned. I still haven't seen anything out there that says that this noise is the harbinger of doom. A few people have claimed this, but haven't backed it up with anything. FUD.
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  #16  
Old 11-29-2012, 04:57 PM
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OK, sorry, I thought this was about a Corton Charlemagne.

Carry on.
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  #17  
Old 11-29-2012, 06:08 PM
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Quote:
Originally Posted by Kamdog View Post
OK, sorry, I thought this was about a Corton Charlemagne.

Carry on.
I can't believe that took so long.

Was it just too obvious? Or is there a " Performance Vineyard Package" that I missed when spec'ing the jummobile?

jummo
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Last edited by jummo; 11-29-2012 at 06:10 PM.
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  #18  
Old 11-29-2012, 08:55 PM
Roleez Roleez is offline
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BMWs produce subtle wine from the engine? Merlot, Zinfandel, Riesling?
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  #19  
Old 11-30-2012, 12:25 AM
Phil325i Phil325i is online now
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Police siren whine is deffo turbo on the way out...
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  #20  
Old 11-30-2012, 12:51 AM
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Quote:
Originally Posted by Roleez View Post
BMWs produce subtle wine from the engine? Merlot, Zinfandel, Riesling?
I was thinking Gewürztraminer...
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  #21  
Old 11-30-2012, 10:13 AM
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This thread has a fruity nose and delicate palette

I came for the wine jokes, and am leaving satisfied.
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  #22  
Old 11-30-2012, 11:34 AM
gpburdell gpburdell is offline
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Indeed, but I was hoping for some pairing advice. Any recommendations on what goes well with a subtle Engine Wine?
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